<!DOCTYPE html>
<html lang="en">
<head>
    <meta http-equiv="content-type" charset="UTF-8">
    <title>test</title>
</head>
<body>
    First Name: <input type="text" class="first_name">  <br>

    Last Name: <input type="text" class="last_name">
    <button class="post">点我</button>

    username:<input type="text" class="user_name">
    <button class="get">get测试</button>



<script src="javascripts/jquery-1.9.0.min.js"></script>
<script src="javascripts/test.js"></script>
</body>
</html>